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https://issues.apache.org/jira/browse/HIVE-21036?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16739586#comment-16739586
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Eugene Koifman commented on HIVE-21036:
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I don't understand your explanation about the constructors.
I meant something like "{{optional TxnType txn_type = TxnType.DEFAULT}}" in
Thrift definition.
Apparently you can't have an item both required and with default.
But this way it's always set to the most general transaction type and places
like Worker supply a more specific one.
> extend OpenTxnRequest with transaction type
> -------------------------------------------
>
> Key: HIVE-21036
> URL: https://issues.apache.org/jira/browse/HIVE-21036
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 4.0.0
> Reporter: Eugene Koifman
> Assignee: Igor Kryvenko
> Priority: Major
> Attachments: HIVE-21036.01.patch, HIVE-21036.02.patch,
> HIVE-21036.03.patch
>
>
> There is a {{TXN_TYPE}} field in {{TXNS}} table.
> There is {{TxnHandler.TxnType}} with legal values. It would be useful to
> TxnType a {{Thrift}}, add a new {{COMPACTION}} type object and allow setting
> it in {{OpenTxnRequest}}.
> Since HIVE-20823 compactor starts a txn and should set this.
> Down the road we may want to set READ_ONLY either based on parsing of the
> query or user input which can make {{TxnHandler.commitTxn}} faster.
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